Reviews by patients who have Tooth Pain and take Zinc either as part of daily diet or as method of treatment. Positive and negative experiences from patients with Tooth Pain that take Zinc
1 Red or black colored stool may be a sign of bleeding in the GI tract (from the esophagus, stomach, small intestine or colon) and should not be ignored.  When stool color changes, what tests need to be done depend upon depends upon what cause is suspected for the stool color change.
A black stool caused by food, supplements, medication, or minerals might sometimes be called false melena.. It is called false because the black color is not actually due to bleeding. Iron supplements, taken alone or as part of a multivitamin for iron-deficiency anemia, may cause black stools or even green stools. Foods that are dark blue, black or green may also cause black stools. Substances that are often found to cause black stools include: Black licorice. Blueberries. Iron supplements. Lead.